set_wallpaper.c

/*
 * Copyright (c) 2004 - 2016 Han Boetes <hboetes@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "fbsetbg.h"
#include "apps.h"


/*
 * This module sends the wallpaper-setting command to the system, if it involves
 * a wallpaper (jpg, png etc.)
 */
int
set_wallpaper(char option, char *filename)
{

        int             setter, ret = 0;
        char            *command;

        command = malloc(MAXPATHLEN);
        if (command == NULL)
                err(1, "out of memory");

        if (access(filename, R_OK) != 0)
                err(1, "%s", filename);

        setter = find_setters(QUIET);

        cleanpath(filename);

        switch (option)
        {
        case 'f':
                write_lastwallpaper("full", filename);
                /* fallthrough */
        case 'F':
                ret = snprintf(command, MAXPATHLEN, "%s %s \"%s\"",
                    apps[setter].name, apps[setter].full, filename);
                break;

        case 'c':
                write_lastwallpaper("center", filename);
                /* fallthrough */
        case 'C':
                ret = snprintf(command, MAXPATHLEN, "%s %s \"%s\"",
                    apps[setter].name, apps[setter].center, filename);
                break;

        case 'a':
                write_lastwallpaper("aspect", filename);
                /* fallthrough */
        case 'A':
                ret = snprintf(command, MAXPATHLEN, "%s %s \"%s\"",
                    apps[setter].name, apps[setter].aspect, filename);
                break;

        case 't':
                write_lastwallpaper("tile", filename);
                /* fallthrough */
        case 'T':
                ret = snprintf(command, MAXPATHLEN, "%s %s \"%s\"",
                    apps[setter].name, apps[setter].tile, filename);
                break;

        case 'o':
                write_lastwallpaper("rotate", filename);
                ret = snprintf(command, MAXPATHLEN, "%s %s \"%s\"",
                    apps[setter].name, apps[setter].full, filename);
                break;
        }

        if (ret < 0 || ret >= MAXPATHLEN)
                errx(1, "command to be executed too long");

        /* XXX system() ... Hard to avoid without dropping support for some
         * older setters. */
        ret = system(command);
/*      exit(ret); */
        free(command);
        return (ret);
}